18QHTF21-13.476-OE

Overview

The 18QHTF21-13.476-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.476 MHz and utilizes LVCMOS output logic levels. The device supports voltage enable and disable functionality, allowing for power management control. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly. The component is designed for general electronic applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Voltage enable and disable control capability
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose timing circuits
• Digital signal processing systems
• Embedded controller clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the supply voltage matches the operational range defined in the official datasheet. Ensure the PCB footprint aligns with the 4-SMD no-lead package dimensions to prevent soldering defects during assembly.

Selection Notes

Select this component when a low-profile surface-mount oscillator is required for space-constrained designs. Consider the LVCMOS output swing if interfacing directly with digital inputs without level shifting. Evaluate the enable/disable feature necessity for power-sensitive applications where clock gating is beneficial for energy conservation.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's quartz industry. Similar models in this series include variants with different frequencies such as 50.256 MHz and 33.200 MHz, sharing the same package and functional characteristics.

Replacement Considerations

Direct substitutes may include other 13.476 MHz LVCMOS oscillators in 4-SMD packages. Verify pinout compatibility and electrical parameters before substitution. Cross-reference with Mercury Electronic's full catalog for alternative part numbers within the same series.